Solve the problem of folder-copied bug. 

Add some command, for example
"USBHacker.exe D:\myHacker\", this will copy all files into the special folder.
"USBHacker.exe D:\myHacker\ docx", this will copy only files of docx format into the folder"D:\myHacker\".
"USBHacker.exe D:\myHacker\ docx doc txt html", this will copy files of docx,doc,txt,html into the folder.